1-(fluoromethyl)cyclopropane-1-carbaldehyde 、 5-[(3S)-3-amino-5-fluoro-7-hydroxy-3,4-dihydro-2H-1-benzopyran-6-yl]-1λ
6,2,5-thiadiazolidine-1,1,3-trione, ammonia salt 在
sodium acetate 、
溶剂黄146 作用下,
以
甲醇 为溶剂,
反应 2.0h,
以16%的产率得到5-[(3S)-5-fluoro-3-({[1-(fluoromethyl)cyclopropyl]methyl}amino)-7-hydroxy-3,4-dihydro-2H-1-benzopyran-6-yl]-1λ
6,2,5-thiadiazolidine-1,1,3-trione